Very rare 1920s Harwood ( first automatic watch in the world ) . First version ! Not republic. Ref 2671 patent no 1576120 dated 1928 . Silver case . All Original. Can wore around 20 hrs after movement ! Historical collection ! Size 30mm. Watch in good working condition . Price firmed

https://jewelry.ha.com/itm/timepieces/wristwatch/harwood-self-winding-watch-co-patent-1576120/a/5242-56324.s
https://www.fratellowatches.com/tbt-john-harwood-and-the-worlds-first-automatic-wristwatch/
http://jacktreasure.blogspot.com/2009/07/history-of-first-automatic-watch.html?m=1